4. Diseases caused by manufacturing materials
A simile is a comparison of one thing to another, for example "smart as a fox".
The only comparison to something else that I find in the lines above is "like the rusty latch" - and this is a simile. The correct answer is then a) .
Answer: Short periods
Explanation:
The species must have only lived for a short period of geologic time.
Hope this helped.
Answer: I believe it is A.)
Explanation: I do not know if it is correct, but I believe so.